Components

High-vacuum angle valves

HV angle valves are preferably used as the main valve between the vacuum chamber and high-vacuum generator. Valves of the nominal sizes 320 and 400 are also used as a bypass valve in very large vacuum systems.

The following standard designs are available:

• Painted housing made of either stainless steel or structural steel
• Valve plate always made of stainless steel
• Viton or NBR seals
• Flanges for bypass lines and measuring devices

This design provides the following benefit:

The working cylinder which is attached to the chamfered valve box gives the valve an extremely compact outer shape. Compared to customary valve forms this allows:

• Unhindered installation of a working platform above the valve
• Minimum confined space in the event that the pump unit has to be enclosed.

Special design features are open to agreement:

• " Special flange connections
• " Dimensions and position of the flanges for bypass lines and measuring devices
• " Nominal sizes of up to DN 1,000 on request
• " Box-type valves for two parallel pumps on request

Function

A pneumatic cylinder transfers a tilting motion to the valve plate via an elastomer-coated rotary motion feedthrough. A short parallel stroke precedes this tilting motion. The valve plate opening position ensures an optimum control value. This design is particularly suitable as a main valve.

Design types

Angle valves: DN 320, DN 400, DN 500, DN 630, DN 800
Box-type valves: DN 630, DN 800

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